Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Effects of Rib Angles on Heat Transfer in a Square Convergent Channel with Ribs on One Wall

한면에 리브가 설치된 4면 수축 사각채널에서 리브의 각도가 열전달에 미치는 영향

  • Lee, Myung-Sung (Gyeongnam Institute for Regional Program Evaluation) ;
  • Kim, Beom-Soo (Dpt. of Mechanical & System Engineering, Gyeongsang National University) ;
  • Ahn, Soo-Whan (Dpt. of Mechanical & System Engineering, Gyeongsang National University)
  • 이명성 (경남지역사업평가단) ;
  • 김범수 (경상대학교 해양산업연구소 기계시스템공학과) ;
  • 안수환 (경상대학교 해양산업연구소 기계시스템공학과)
  • Received : 2015.12.24
  • Accepted : 2016.02.04
  • Published : 2016.02.28
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Abstract

The local heat transfer and pressure drops of developed turbulent flows in the convergent channels with square cross-sectional areas along the streamwise distance have been investigated experimentally. Four different parallel angled ribs (a = $30^{\circ}$, $45^{\circ}$, $60^{\circ}$, and $90^{\circ}$) are placed to the one sided wall only, respectively. The ribbed walls are manufactured with a fixed rib height (e)=10 mm and the ratio of rib spacing (p) to height (e) = 10. The measurement was run within the range of Reynolds numbers from 22,000 to 79,000. The result shows that the increases in the Nusselt numbers for the flow attack angles can be seen in the order of $30^{\circ}$, $45^{\circ}$, $60^{\circ}$ and $90^{\circ}$.

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References

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